François Primeau is a professor in the Earth System Science department at UC Irvine. François shared his STEM journey and how he ended up as a professor in the Department of Earth System Science at UCI. He explained how it initially started because he wanted to be a scientist from a young age and went on to study mathematics during his undergraduate and master's degrees. By chance, he switched to a Ph.D. in physical oceanography due to the interesting math problems related to ocean waves. Throughout his journey, François faced the challenge of understanding complex scientific concepts, particularly when he encountered a book on general relativity that he couldn't comprehend. This motivated him to pursue mathematics, eventually leading him back to the field of science. François persevered by focusing on science and learning, ignoring external factors like success, money, and recognition. Currently, his research revolves around building mathematical models to understand the transfer of carbon dioxide (CO2) between the atmosphere and the ocean. He studies the physical process of CO2 dissolution in surface water and its transportation to the deep ocean through currents, and also investigates how phytoplankton in the surface ocean fix CO2 and transfer it to the deep ocean. François emphasizes the complexity of environmental science and the misconception that it is easier than other scientific disciplines. He encourages students with an aptitude for math not to give up, as their skills are valuable in various scientific fields. In terms of education and climate change, François believes that providing a solid education is crucial to combat misinformation and conspiracy theories. He suggests that teachers encourage students to persevere in math and science, as these skills are useful across different scientific disciplines. François also highlights the importance of understanding the consequences of climate change beyond just global warming. The loss of natural habitats and biodiversity is irreversible, and it represents a significant concern for him. Additionally, François's work contributes to climate sustainability and environmental solutions, particularly in the context of CO2 absorption. His research helps assess the impacts of various methods, such as modifying the land or ocean chemistry, for carbon dioxide removal. This knowledge is essential for making informed decisions and developing effective policies for CO2 mitigation and removal.